Waterproof heart rate measuring apparatus



FIG. 1 is right front perspective view of the waterproof heart rate measuring apparatus;

FIG. 2 is a left rear perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a rear view thereof. 

CLAIM The ornamental design for a waterproof heart rate measuring apparatus, as shown. 